Dry-ore-separating machine.



W. W. BONSON @L W. L. MOLAUGHLIN.

DRY ORE SEPARATING MACHINE.

l APPLICATION fILED `NOV. l2,` 1907. 933,053. Patented Sept. v 7, 1909.

6 SHEETS-SHEET 2.

W. W. BoNsoNazW. L. MOLAUGHLIN. l Y

SSSSSSSSSSSSSS 3.

C' 'E' 'l W. W. BONSON & W. L. MQLAUGHLIN.

DRY ORE SEPARATING MACHINE.

APPLICATION FILED NOV. 12, 1907.

Patented Sept. 7, 1909.

6 SHEETS-SHEET 4.

LAMM

6R33 h1 cases W. W. BoNsoN 3 W. L. MULAUGHLIN,

, DRY ORE SEPARATING MACHINE. APPLICATION FILED NOV. l2, 190V?.

. Patented sept.' 7,1909.

6 SHEETS-SHEET 6.

WJTNESSES:

c Q-'Further it consists ih :imparting to the UNITED STATES PATENTclinica WILLIAM-W. BoNsoN AND wILLsonL. McLAUGHLIN. QFpUpUQUE, iowa,AssIGNoRs 'ro HIGHSPEED DRY CONCENTRATING COMRANY, ?IQFNIX, IZQNAmenairony,

A ccnroRATIoNoF ARIZONA jram'roay,

"Dev-onE-sEPAnArING MAGHINE.

Speciilation o f Letterslatent.

To 'all whom 'it' may concern: i l.

Be` it known` that we,- 'WILLIAM W. BON- son and WlLILsoNL. MCLAUGHL'INcitizens I y lubuque, 5 in the county of Dubuque and State of Iowa,

of rthe United States, residing at be ysimple and inex ensiveinconstruction 'and can be ,operate -without the assistance of .experts ndwhich shall have not only a 'greatly increased capacity but many times'greater than those now on the'market wherey they may be used at agreatly increased profit commercially.

- :It essentially consists in a jig or bed upon which the ore and gangueis delivered which' bed is -adjustablyhung on an incline-longitudinal-ly`and adapted to he moved back- 'ward andforward longitudinali and which'hed is covered with a mesh, pre erably some textile fabric, and overthe mesh -two series` .of deflectors, the lower having-their uppersurface inclined longitudinally and set at an angle .to the line ofmotion of the bed and the upper seriesof delectors secured/to thel :topof the lower deflectors at an angle to the lower defiectors and at anangle to .the line of motion ofthe bed forming diagonal-ly disposedrunways decreasin in depth froin tone side to the other o-f the ed alongwhich the ore is forced diagonally -into a single runway along'one sideof the bed andv the -gangue is forced into a runway on the other side ofVthe bed and duri-ng allthe move- A ments of the bed and gnassoverlthelbed and between the defiectors the mass will be' sub- .jectedtherethrough to the action of constant air pressure, or current ofl aireither cold or heated and these together with the 'motions ofthe bed`and deectors thereon will crowd the ore and gangue in oppositelydiagonal directions 'to the sidesv of the bed and-thus increase" greatlyvthe rapidity of separation.

mass tombe-separated whilel upo lthe mesh "v--andfamong the 'Ldeectors'and'suli -action of-*ithe'eir pressure, various moveect to the-Iments,whereby, with the air, the mass is first stratied into astratumwof gangue and ore and the gangue is directedand crowded by theupper deflectors to one 'side of the b ed vand the 'ore by the lowerIdeiectors diagonallyfto the opposite side ofthe bed and `beneath theupper deectors at an angle to' a line parallel with the motion of thebed, and by Ythe Amotion of'the jig and peculiar constrgctionthere .willbe a (great increase in capacity and purity of separation.

The fo wing specification, when read in Patented sept. 7,1909.

connection vwith the drawings accompanying thesame and .forming/a parthereof, will 'describe the construction of our machine and its mode ofop ration whereby we accomplish the rends ought.y

Figure l is a side elevation. Fig. 2 is a 'plan view. Fi 3 isafperspective view of the bed of the Jig showing' the deflectors inposition. Fi i4 is`a side elevation of three -different de ectors fromhead end, and a -plan 4vview of part of .the same. ,Fig 5l is asideelevation of two delectors from tail Aend. Fig. 6 is a cross sectionon line X- X Fig.\2, with the tail board removed. Fig. 7

is a pers ective end view-large' size of a sec- -tion oft e jig. Fig. l8is a perspective yiew of the' air spreader. Fig. .9 is a perspective y fview of the means 4for imparting the diiferent motions Ato .the jig.Fig. 10 isa vertical section .throug'h line Y--Y of.Fig. 13.v Fig. 1l isa sectional plan -view on line Z-Z of 'Fig'. 13. '12 is a side elevationof Fig.

1.3, with the'drive pulleys. removed. Fig; 13 is an end elevation ofFig., 9. f

' Like characters of reference, denote cor-A responding parts-.ineach-.of the figures.

f Referring to the drawings, ,2 designates the machine whlch vconsistsof a base 1, to

.which are secured on each side the yuprights or standards 5..' The topsof these standards are secu/l'ed`-into1longitdinal rails 6 and arestayed by the braces 8 attached to the basev 4, and` top rai-ls 6. 1t isfurther stayed by the braces -10-and 12, the whole constituting a frame.ithin the frame is. suspended a jig orseparater, to which are impartedva'ripivotcd atenei end to the `base and at the for different sizes andclasses of ore.

. through.

other end to adjustable sus ension rods 16 passing through lhe top rais-(ij-for adjusting the jig to any longitudinal pitch required It will benoticed that the hangers l5 are pivoted al. an angle lor the purposespresently to appear. j

(ln lhe forward end of the top rails is secured a hopper lS having achute 2O extending crosswise of the jig by which the mass lo beseparated is delivered all along the front end ol the jigging bed.

Upon beai'ns running crosswise on the inside of the jig (not shown) aresecured a series 'ol'v supports 22 (see Figs. (3 and 7) beveled or wedgeshaped at their top and set diagonally at a short distance apart,leaving an air space beneath the supports above the bottom of the jigand spaces 24 between the supports for the air to ass up there- Upon thetop of tie-supports is stretched and secured' a. mesh V245 or textilefabric which is preferably canvas and over the mesh 25 and parallel withthe supports 22 is secured to the supports a series of rightl1anddelectors, illustnated in Figs. 4 and '.lhese dellectors that arevattached at one of their ends-at intervals along the left side of thejig, are thin for a short distance at 30, then abruptly increased inthickness, forming shoulders 32, and gradually inclining or tapering ontheir upper surfacel toward their other ends at the rlght side of thejig where they are very thin and, as they are secured in a diagonalosition on the bed of the jig-,those near tie tail will each be shorterthan .the next one on the right and at 34, near the left end cornerofthe jig, only a short distance will remain of the increased thickness.As each one toward the right is longer than the one contiguous on theleft il will have inclined or ta ered more before il. reaches the tailend of t e'jig and the one 3o ai. the right corner .of the tail of thejio will be practically the saine thiekness as all those that terminatein the right side'of the ji g. A ll of these deflectors 26 arepreferably ol? the same width from end to end and are 'the jig but haveno shoulders 32 nor thin part 30.' Also these'deflectors gradually anduniformly incline or slant front their front to their ltail ends buteach' to .the right is a 'trifle thinner at its beginning than the oneadjacent'y toit on lthe left till the last'one 31 at the right frontcorner of the ji r is practically the same thiclmess as all t e'othersare at their ends where they approach and are at .the same distance fromthe right side ol the jig and each one tapers or inclines its entirelength. It will be seenthat now the whole upper surface oli thedeliectors 26 will be in an inclined plane commencing .on the left atthe top of the'abrupt increase or shoulder 34 and gradually incliningdownwardly to the right side-of the jig where, it-

will be only slightly raised from the mesh on the jig, just enough toallow the ore of that class te pass under lheupper deflectors but thebed of the jig will remain in a horizontal plane or longitudinallyinclined only. These delectors 2G direct and crowd or forcevthe ore asit is separated from the gangue diagonally toward one side of the jiginto a runway along the side of the jig and oppositely `from the gangueand also provide runways for the ore, decreasing in depth, diagonallyacross the bed of the jig, whereby when' a forward and backward motion1s imparted to the. jig the deflectors will crowd or force the orediagonally` into the longitudinal runway 2l) at one side of the jigalong the. `diagonal runways between the 1nelined deflectors. Upon thediagonal right-hand deflectors 26 are secured a'seriesof diagonalleft-hand deflectors 35 which are, preferably somewhat thicker than thedeleetors 26 and uniform in thickness and in width but are setconsiderably farther apart and extend' from the right side to` nearlythe left side of the 1v. thbickness and are secured rigidly upon the kuper surface of the defiectors 26, the in clmed plane of the uppersurface of the deiieetors 35 will be parallel with the u perinclinedsurface of the deflectors 26. 'l ese defieetors 35 are for thepurpose of directing rand urging or forcing the stratum of gangue of themass to be se arated, after the mass has beenstratified, rom off `thestratum of. ore diagonally toward the left sideof the jig or op ositeside from the ore.- I It 1s manifest that instead of securin the lowerdefleetors to the bed of the jig, w 1ere by they will direct and forcethe ore to the right andthe upper deflectors so that theyV will urge thegangue to the left, they might be reversed and the 3ore carried to theeft and the .gangue to the right and still be equally effective. Theside yin which the` differentdelectors terminate is immaterial.. 'Bytapering or inclining the upper surface of the under detlectors, andsecuring upon them the upper defiectors, there will be provided diagonalrunways 27 decreasing in depth from one end to the other for the ore,vand openings underneath the upper deflectors decreasing 1n size from oneside ylof the',y

surface tothe other, whereby the different As the deflectors 35 are of"uniformv gangue and carried orgforced along the runways 27`under theupper detlectors diagonally to one side of the jig and out into the*longitudinal runway 29 into the-discharge at the tail of the jig andthe gangue held above the ore by pressure ot' air and ,the greatergravity/of the ore will be crowded to the opposite side of the bed ofthe jig by the l,upper deflectors and carried along over the delico-tors26 'and down the side of the bed over the nat portion 30 of thedeiiectors 26 and delivered into the discharge for the gangue.

The leading object of inclining Athe under deflectors 26 upon vtheirupper surface whereby the runways 27 are constant-ly decreasing Y indept-h from one side ofthe bed of the ig to the other side', is toprovide for the separation of a mass of different percentage of ore.Where the mass has only'a small per-4 centage of ore, then, when it isstratified the stratum of ore will be. exceedingly thin with a stratumof gangue over it .and both will pass underneath the deflectors near theleft side of the jig Vbut when they have .been

forced along the runways and underneath the upper defiectors till theycome near the right side where the runways are so shallow y in depththat the combined .strata of ore and gangue wi-l1 beof equal or greaterthickness than the dept-h of the runways then the upper de'lectors willforce the gangue toward the left side off the ore and the ore will passunderneaththe upper defiectors and be forced into the runway 29 onrtheright x side of the jig. t Hence, by inclining these under deilectorsand making the` openings.

`. lunderneath the upper deflectors varying .1n

size, and the runways decreasing in depth according to theclassification ofthe ore to be separated, there will be a contplete searation whether. there be a larger or sma len percentage of ore in themass and a: jig constructed in this -manner will adjust itself for anyvariations in the percentage of ore without the operator making anychange` whateverin the feed or speed of the machine and the line of oresmay increase or decrease in breadth or thickness as the ore varies inrichness wlth'out any readj'usting of the' jig.

All the operator has todo is to vary the position' of the gates wherebya greater or less quantity of. ore and proportionate quantity of gangueis' directed into the discharge.

' t At the tail end of the jig are three 'dischar s, one for the Iore36, one 38'jfor the part gangue", and i the gangue Ihese ydischarges(see Fig. 6)l consist of tapering boxes securedl to' the sides of thejig and lto each other' and terminate in preferably iiexible W tubes. tthe top of the boxes are pivoted partitions or gates 47 which can' beturned to each discharge. The jig is boxed in at the front end by theend piece 43 and the sides' by the plates 49, and it may be covered overthe deflecters to lkeep the dust from escaping into the open air andprovided with means for` disposing of the dust.. Through the base board14 are air 41 around'` which are attached flexible tubes 42, that areconnected with' an air blast (not shown). For the purpose of spreadingthe air there are secured in -the base board at variousI points aroundthesel holes 4l supports 44 extending a short distance above the baseand on the top of these supports 44 is. secured a fiat plate ,as shownin Fig. 8. 1fit. be desired lto heat the air to be used then holes itwill be brought to the required temperaof the ore from the gangue andthe compound ore and'gangue and delivering each into its designateddischarge, thereis pron vided a block 50 to whichis bolted a fra-mejigbeneath the canvasby the 52 bybolts 54. In this frame 52 is pivoted yI an angular frame or double arm lever 55 by the pivot pin v56". Tislever 55'is provided witha rectangular ecess 58 in which 1s a block 60and through which is an opening. Through the openingis a driving. shaft64 provided with an eccentric 65. To the outer end of the shaft 64 aresecured .driving pulleys 66 which are belted to the motor. The

`bearings 68 for the shaft are secured in the v.frame 52 on oppositesides oftheflever- 55. In tthe' upright part `of the lever 55 `'1s arecess 70 in which is a block 72jto which is pivoted a shaft 74 and saidshaft connected to the under side 'of the jig preferably near itscenter. v

For the purposeI of' adjusting the block 72 to difieren-t positions inthe lrecess 70 there' is provided. a ,screw bolt 75 which passes throughthe upper end of the lever 55 and through the 'block 7 2 which bolt isprovided with a. head 76. The upper end 'of the lever 55 is formed intoan arm 7 Siwhich overlaps the -sidel80 of the lever 55, the side 80being 'free Vand disconnected at the top from the overlapping arm 781AFor .the purpose ot holding the block 72 in any adjusted position inthe recess 70 there is provided a. set

` screw 82' which passes through ,the arm 7 S and impinges against theAside' 80 and when the block 72 has been adjusted to the desiredposition,l then the. screw 82 is tightened and springs the'side againstthe block and firmly holds it in its adjusted'position.

U5A the right or left, whereby more or less of the I For the purpose ofcushioning the Amotion"13o ofthe jio and preventing the i.jar caused byits rapid forward and. backward motion I 'there is attached to each ofthe standards 5,

on opposite sides a s ring 81 which is also secured to the sides o. thejig. The manner in which this construction will impart the desiredmovements to the jig will be as fol f the lever 55 to move forward andbackward and as the shaft 7a is attached to the block .72 and to thebody of the ji it will draw the jig` forward and push it ackward and,'asv the jig is suspended on the hangers 15, it will also be given anupward and downward movement at each revolution of the shaft 64, and themovements of the jig will be substantially backward and 'forward and upand down in the arc of a circle. When it is desired to change the lengthof the movements ofthe jig to adapt it to different conditions of tlieinass'to be separated, the sci-ew S2V is loosened and the screw bolt 75is adjusted to bring the block 72 higher or lower in the recessaccording as it is desired to have the stroke of the shaft longer orshorter. It has been foundE that these movements of the jig inconnection with the deileetors and. their'relative positionl onV the jighave added largely/to thecapacity of a jig `of given size to makerapidand accurate separation, Since these movements are very short andrapid and as the jig may be set horizontal or inclined longitudinallywith the defleetoi's at an angle tothe line of motion, the strata ofgangue and ore at. each forward and backward movement of the jig will becrowded in diagoiiallybpposite directions and hence the separation willbe forced and therefore exceedingl. rapid.

It will be understood that al the mass of run-of-niine, ore and rock isfirst crushed and then classified and that there is a jig provided witha bed of different size mesh, some coarser and some finer, according tothe classification; and further that the'deflectors will be so adjustedwith reference to J eachyother and the incline of the upper surface ofthe lowerdeflectors 'will be su'ch that the runways will be'o'f,different decreasing depth and1 the o enings undcrneathsthe de fioctoi-s35 -will e of different size to give sullicicnt room for thefpassage-oftheoreof the class to bese -iarated along the runways and underneath theupper delectors.

The mode of operatingour device is substantially as follows: Power isapplied to the shaft 74| which is attached toA the under side of the andimparts to it the motions hei-einliefernl set out. The mass to beseparated is introduced into the hopper 18 and passes down llie chute 20and is delivered entirely across the front end Vof the jig andpreferably in such quantities as to lill be-L tween the .defiectors Thefour above described motions of the jig together with the constant.pressure of the air from beneath, 70

between the supports 22 and up through the mesh 25 will immediatelystratify the mass by raising the gangue, which is lighter than thc ore,up between the deiectors 35 and keeping the ore, which is heavier, belowon 75 the mesh, then the upper deflectors, by the movement of the jigwill skim the upper stratum of gangue from off the ystratumbf ore andforcey it diagonally to theleft side over the thin portion 30 of thedefiectors 26 80 into the discharge 40 and the stratum of ore will becrowded diagonally by the lower de- Vtlectors along the runways 27through the openings under the deflectors toward the right side of thejig into the longitudinal 85 runwayy 29\ and be delivered into thedischarge 36. i l.

If any particles of ore are mingled with the gangue they will-be searatedfrom the gangue upon the left-han side -of the jig between thethin portion 3.0 of the delectors- V26 and will be carried across themachine under the deiectorsj and into the discharge 36. Any particles-orlumps of both gangue and ore that were not separated from each otherwhen crushed, will be lighter than the ore and heavier than the gangueand hence-will be directed toward the left by the upper defleet'ors 35and when 100 near the. ft sidel will pass underneath said deflectors andthen be carried toward the right by the detlectors 26 then toward theleft by the deiiectors along down the central portion of the jig and,since the deec? tors at their shoulders 32v are of the saineA thicknessnear the tail of the jig that they are) near the head, these particlesofgangue and orc combined will be directed into the central discharge38.

It will be seen that lit is important that the lower deectors incline ontheirupper -surface thereby formingv runways that decrease in depth fromone end to the other and that the runways are at an angle .to .the lineof motion of the jig. It also 1s -important` that the upper delectors besecured on the upper surface of the Tower deflectors whereby there willbe formed openings beneath the upperl deflectorsthat decrease 1,20 'size from oneside to the other of the jig' andthat the upper deilectorssetl at an angle to ,the lower deflectors and at an angle to the motionof the jig, for the constant pressure of air through the mass and themotion v of the jig will keep the mass stratified with the ore beneathand the ganguc above whether there die a small or large proportion ofthe ore, and then l'lie upper deflectors will crowd ,the gangue fromott' the ore l30` 45 the jig along the tapering runways 27 under jdiagonali all,

to the left side of the jig and the lower de ctors will force the orealong the runways through the openings underneath the upper deflectorsand the particles f the mass containing botlrore and ',gangue will beforced by the upper delectors toward v the left and when they come wherethey can pass under the upper deiectors `they will be forced by thelower deflectorsto the right and since they cannot pass underthe flipperld'eiectors at the right side of the jig, they j tition or gate 47between the discharge 3SI and the discharge 40 toward the right of themachine and this will ive more space at the tail of the jig to deliverthe gangue into the discharge 4Q and vlif it bea largerpercentage ofore, then another gate 47 is swung over toward the discharge 88. v Inthis manner the quantity of either` ore, ganguc or middlings may bevaried at will according as the mass has a greater or lessv percentageofore, gangue or I'niddlings. It will be seen by theconstruction of"` thejig with two sets of deflectors, set one over the other and at an angleto the horizontal or longitudinally ,inclined surface, together with thelongitudinal movement of the surface lat an angle to the detlectors andtheV pressure vof air partlylifting and holding up the gangu andstratifying the mass, that each forward and backward and upwardl anddownward movement of the jig 'will force the stratum of gangue from olfthe ore and `force it toone side over the delectors 2G and also forcetheore to the other side of the deectorsand in this manner where theganlgue is crowded to one side and the ore to t e other, there will be agreatly in K creased rapidity of the separation of the ore over theseparation in those devices wherein j only motion and gravity arecombined with the air in making the separation. v Itwill also beobserved by making the lower deflectors thin at their beginnings, l thatare attached at intervals along the left side of the jig, then abru tlyincreasing their thickness to form shoul ers,'and gradually incliningtheir upper 'surface andgradu ally decreasing in thicknessthe beglnninvsof the deflectors that are attached along t e front end of the machineand. inclining them toward their outer ends thereby decreasing the de thof the runways and decreasing the .size o the openings beneath the vuper deside Aof the jig, that thereby there will A completeness accuracyand purity of the sepa rationfwhether the percentage of ore in the massbe lar' e or small. 'I

Having now described our invention what` we cla-im is:

1. In a d ore separator, a jig, a mesh on the bed of t e jig, means fdrforcing a curr` rent of air up through 'the mesh, means forl impartingmotion tothe jig to' aid theair 'in stratifying the mass, and meansincludinq longitudinally tapered delectors connecte with the jig forcrowding and forcing the gangue from off the ore to one side of the jigand other delectors for forcing the vorel diagonally to the oppositeside of the jig.

2. In a dry ore separator, a jig, hangers'- o for flexibly suspendingthe jig on an incline longitudinally, a mesh vupon the bed of the jig,means for forcing a constant current of air through the mesh and massthereontwo series of deflectors secured upon the mesh at an angle toeach other and tothe mot-ion of the jig forming diagonally disposedrun-vV ways decreasing in depth on'the surface of the mesh, and meansconnected with the jigY and the hangers by 'which the jig is sus-Vpended for imparting to vthe jig a backward a nd forward movementin thearc of a circle, to force the gan ue in onerdrection in the runwaysffromo the ore tothe side of the bed and the ore in the-runways totheopposite side of the bed.

,3. In4 a dry ore separator, a jig, a'mesh upon the bed ofthe jig,deflect-ors having their upper surfaces beveled or inclinedlongitudinally and secured upon the bed of the jig at an angle to `thelength andmotion of the jig, a second series of delectors secured i iupon the first at an angle thereto and at anangle to the motion of thejig, means for forcing a constant current of air through the meshbetween the deflectcrs, and means for imparting a forward and backwardmovement to the jig to aid the air inst-ratifying the mass and forcingthe gangue. in adiagonal direction olf from the ore'toone side of thejig and the ore to the other side between the lower deiectors. j

4. In 'a dry ore separator,'a jig, means fr' sus ending the jig on anincline' longitudinal y, a mesh over the bed of the jig, a series lofdeflectorshaving their upper surfaces beveledor inclined longitudinallyand set at an angle to the motion of the jig, a sec- .ond seriesof'deflectors of uniform size se v .cured upon the first series at anangle thereto and an angle to thel motion ofthe jig and havin the uppersurface ofthe deflectors iclinm from one sideto the other of the Athemesh, and means forimparting to ward movement to force the ngne off thef ore by the deectors 'diagona v y e ad@ e?) 125 bed oft e jig, meansfor forcing air through 'I I of' the jig and the ore by the lowerdefleetors to the other side of the jig.

3. In a. dry ore separator, a jig, mea ns for adjustably suspendingthRe/jig von an inclinel longitudinally, a mesh u on the jig, two seriesof deflectors secure upon the mesh at an angle to each other and to themotion of thc j ig and having the upper sui-'tace of the detlectorsinclining from one side of the bed to' the other at an angle to theplane of the base of the jig, means for forcing air upward through themesh between the-deflec tors, .and means for imparting to the bed aforward and `backward movement at an angte, to the delectors to forcethe ore in a diagonal direction along one side of the dettectors to oneside of the Ajig and the gangue to the opposite side of the jig fromof'lA the ore. w

6. In a dry ore separator, a j ig, means for adjustably suspem'ling thejig-on an incline longitudinally, a mesh upon the jig, a series ofdel'lectorshaving their upper surface beveled or inclined longitudinallysecured rupon the mesh at anA angle thereto and at an angle to themotion of the ji and forming upon the mesh Jdiagonally disposed runwaysdecreasing in depth from one side of the to the other, a second seriesofdeflectors see cured upon the trst `at an angle thereto and atan angleto the motion ofthe jig and having the upper plane of the surface of thedetiectors when lin position inclined from one side to the other of thejig and atan angle `yto the plane of the/base Vof the jig, means forforcing a 4current .of air up through the mesh and among the deflectors,and means for imparting to the jig a forward-and backward andj an hp anddown movement in the arc of aicircle to force the gangue oft' the ore intherunways to one side of the jig andthe ore along the runways to theopposite side:

7. In a dry yore separator, a jig, means for ad jnstably suspending thejig on an incline longitudinally, la mesh upon the jig, two scries ofdefleotors,the um er series secured to Y tthejig at an angle thereto andat. van angle to themotion lofi the jig and each detlector having its uper surface beveled or inclined klongitudinal y, the upper seriessecured upon the lowerlseries at an angle thereto and providing openingsbeneath the .upper deyiectors and between the lower detleetors," a

longitudinal runway in one side of the jig,

means `'for forcing a 'current' of air 'up through the mesh, and meansfor imparting motion in the ar'c Vof a circle. tothe ji to cause thedeflectors to force the ore aliene the runways between the. lowerdeflectors and Vbeneath the up er'deflectors into the j runway on oneside o' the jig 'and the gangue f tp the opposite side vof the jig fromofi' the 8. In a charge, means for forcing a constant current.'

`of air up through the mesh-and runways to aid in strati't'ying themass, and means for imparting to the a movement in the arc ot' alcircleand at au angle to the line of thc runways to crowd the stratum olore/along 4the runways to said runway in the. side ot' the jig, andcrowd the 'gang'ue diagonally to the oppositeiside of the jig oli"fro1n.the-ore.

t). ln a dry ore separator, a jig-,meansI for adjustably suspending theon an incline longitudinally, afmesh on the bed ol' the diagonallydisposed railways decreasing in depth as they approach one side, ol.lthe bed, means for forcing a constant current of air tlnOugILthc mesh,to aid in stratit'ying the mass, nieans lfor forcing the stratumofgangue from oil' the ore diagonally to one. side of the bed while therore is within the runways, and means for imparting to the a forward andbackward and up and down morenlent to aid in stratifying the uniss-and.to force the Ore along the bottom of the runways to 'de opposite sideof the bed away from the gangue after the gangue has been forced fromoff the ore.

10. In a dry -ore separator, a jig set on an incline, a mesh u on thejig, a series of deiectors secured aliove the` mesh at an angle tothelength of the jig and'said deflectors having their u per surface beveledkor incline lonfritudmally, a second series of deflectors o?uniform/shape secured on the first series of dellectors at an anglethereto and at an angle to the length of the jig and upon thejig, twoseries of delect'ors set upon the mesh at an angle to the length of thebed and an angle to each other and having the plane of the upper surfaceat an angle tothe lateral plane of the bed of the jig, means for forcingair up through the mesh and bet ween the-defiectors, and means forimparting to the jig a reciprocating motion atan angle to the`uppersurface ofthe defiectors.

12. In a dry ore separator, a jig, a. mesh on the jig, a series ofdeflectors upon the mesh-formed with athin portion near the end, thenabruptly increased in thickness and then inclined or beveled on theirupper` A means for forcing air up through the mesh,

and means yfor imparti-ng to the a1eCip-- rocatory movement at an angletothe deflectors.

13. In an ore separator, a'jig, a mesh on the jig, a' series ofdelectors upon the mesh formed with a -thin portion for a short distancealong their ends Where theyvare at` tached to the side of the jig, saiddelectors abruptly increasing in thickness then inclined on their uppersurface to the ends of the delectors said deflectors extendingdiagonallyj to near the opposite side of the jig and set at an angle tothe motion of the jig, a second series of deflectors secured upon therst at an angle thereto and at an 4angle to the motion of the jig andextending from near one side to the opposite side of the jig, alongitudinal runway along one side of the j ig near the ends of both'series of deectors and connected with the discharge, means for forcingair up through the mesh and among the deiectors, and means for impart:-ing a reciprocating nioti'on to the bed.

14. lnl a dry ore separator, a jig, a mesh on the bed of the jig, meansfor forcinga current of air through .the mesh, means for impartingmotion to the jig to aid the air in stratifying'the mass, longitudinallytapered deflectors, said 'deiectors forming runways decreasing' in depthbetween the same, and a series of deectors over the runways and at anangle thereto'and at an angle to the motion of the jig. f

15. In a dry ore separator, a jig, a mesh on the bed of the jig, meansfor forcinga current of air through the'nfesh, means for impartingmotion. t0 the jig, longitudinally tapered deflectors set atan angle tothe motionof the jig forming diagonally disposed runu'ays decreasing indepth, deflectorsset upon said 4'tapered deflectors and over saidrunways.

16. In a dry ore separator a jig, a mesh on'l the bed of the jig, means`for forcing a current of air through the mesh, deflectors of luniformthickness for a short distance then abruptly increasingin thickness,then longitudinally tapered toward their other end set upon the anddiagonally disposed to the motion ofthe jig and forming `diagonallydisposed runways of uniform depth for a short distance then abruptlyincreasing in depth and thendecreasing in depth toward theiroppositeends, other deflectors set upon the tapered portion of the firstdelectors and at an vangle thereto, and means for imparting motion tothe ji In testimony whereof we a X our'- signatures, in presence of twowitnesses.

WILLIAM BONSON.

IVILLSON L. MCLAUGHLIN.

Witnesses: v

' M. M. CADY,

V. L. I-IATTER.

